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Finding the Third Proportional to 448 and 1,210

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Solution

The third proportional to 448 and 1,210 is: 3,268.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    448 : 1,210 = 1,210 : x
  2. Step 2: Convert to fraction form
    448/1,210 = 1,210/x
  3. Step 3: Cross multiply
    448x = 1,210 × 1,210
  4. Step 4: Simplify right side
    448x = 1,464,100
  5. Step 5: Solve for x
    x = 1,464,100/448
  6. Step 6: Final answer
    x = 3,268.08

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Why These Related Problems?

These problems maintain the same ratio (2.70) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.